<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        .box{
            font-family: "微软雅黑";
            font-size: 36px;
            font-style: oblique;
            font-weight: bold;
        }
        .box1{
            font-family: "微软雅黑";
            font-size: 36px;
            font-style: oblique;
            font-weight: bolder;
        }
        .box2{
            font-family: "微软雅黑";
            font-size: 36px;
            font-style: oblique;
            font-weight: lighter;
        }
        .box3{
            font:italic bold 20px/10px "微软雅黑";
        }
    </style>
</head>
<body>
    <div class="box">
        Hello World
    </div>
    <div class="box1">
        Hello World
    </div>
    <div class="box2">
        Hello World
    </div>

    <div class="box3">
        Hello World
    </div>
</body>
</html>